US7326188B1 - Anesthesia manifold and induction valve - Google Patents
Anesthesia manifold and induction valve Download PDFInfo
- Publication number
- US7326188B1 US7326188B1 US10/634,513 US63451303A US7326188B1 US 7326188 B1 US7326188 B1 US 7326188B1 US 63451303 A US63451303 A US 63451303A US 7326188 B1 US7326188 B1 US 7326188B1
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- US
- United States
- Prior art keywords
- valve
- manifold
- anesthesia
- induction
- operative orientation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M2039/229—Stopcocks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/242—Check- or non-return valves designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
- A61M2039/248—Ball-valve
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2493—Check valve with complex design, e.g. several inlets and outlets and several check valves in one body
Definitions
- This invention pertains to a novel valve and valve manifold to facilitate liquid anesthesia induction.
- anesthesiologists use liquid anesthetic agents, administered intravenously. This technique allows for faster anesthesia induction and faster corrective action if a patient shows sign of adverse reaction to the anesthesia.
- an intravenous (IV) catheter is inserted in a vein and connected to an IV bag providing a constant drip of saline via an IV line including one or, typically more, access sites for drug administration via syringes and/or IV pumps.
- stopcocks most frequently ganged together into a manifold configuration. While such devices function well, they require many handle manipulations. Such manipulations are not only tedious but they also can lead to errors. For instance, manipulating the handles of a stopcock manifold in the wrong way can result in the inadvertent dilution of a drug contained in a syringe attached to one of the ports.
- pressure activated valves do not allow for gravity infusions or for aspiration. Luer activated valves alone do not prevent retrograde flow when activated.
- the present invention is directed to an improved anesthesia manifold and an improved induction valve mechanism.
- a plurality of induction valve elements may be joined or “ganged” together in order to define a manifold.
- at least two individual valve elements are combined to form the manifold.
- Each of the plurality of valve elements includes the following components: (1) a valve body; (2) a first inlet port carried by the valve body and defining at least in part a central fluid communication flow path for supplying intravenous fluid to patient; and (3) a second inlet port carried by the valve body and at least in part defining an anesthesia drug inlet.
- Each of the plurality of valve components include: (1) an induction valve mechanism which maintains the second inlet port in a closed condition until a predetermined amount of pressure is applied thereto; and (2) a back flow valve mechanism which maintains the induction valve components in open condition to permit at least one of the following operations: (a) aspiration; (b) back flow; (c) purging; and (d) sampling.
- a control mechanism is provided for each of the plurality of individual valve components to actuate the induction valve mechanism and the backflow valve mechanism.
- FIG. 1 depicts the components which make up a preferred embodiment of the present invention in exploded view form
- FIG. 2 is a partial longitudinal section view of a portion of the preferred embodiment
- FIG. 3 is a partial longitudinal section view of a portion of the preferred embodiment
- FIG. 4 is a perspective view of the ring component shown in FIG. 1 ;
- FIG. 5 is a pictorial representation of a manifold formed with a number of the valves “ganged” together;
- FIG. 6 is a pictorial representation of an anti-rotational interlock feature.
- the present invention is directed to an improved valve manifold for use in delivering liquid anesthesia.
- the invention includes novel valve elements which can be “ganged” together to constitute a manifold.
- the embodiment described in this application has several operational attributes, including: (1) the manifold is made up of a plurality of independently-operable valve elements; (2) each valve can be individually controlled and moved between any one of a plurality of predefined operating modes; and (3) the two basic modes of operation include a pressure-activated flow mode of operation, and an aspiration/backflow/purge/sample mode of operation.
- anesthesia drugs are administered through each individual valve of the valve manifold.
- the valve allows the anesthesia drug to mix into an IV line which receives a saline drip from an IV bag and delivers the mixture of saline fluid and the anesthesia drug to the patient intravenously through an IV catheter.
- an individual valve In the pressure-activated flow mode of operation, an individual valve is connected to a syringe which is utilized to push anesthesia drug through the individual valve into the IV line. Alternatively, it may be coupled to an IV pump. In this mode of operation, the valve is in a closed condition until a sufficient amount of pressure is applied to a pressure-responsive valve member. In this particular application, the actuation of the syringe or the operation of the IV pump generates pressure sufficient to actuate the valve and allow the anesthesia drug to pass through the valve into the IV line. The valve element also operates to check or prevent retrograde flow through the valve.
- an individual valve is utilized to withdraw fluids from the patient through the IV line, to allow aspiration of the valve and IV line, to purge the valve, or to obtain a blood sample.
- the aspiration/backflow/purge/sample mode of operation can be utilized to withdraw samples, typically utilizing a syringe.
- the individual valve members require that some component be moved in order to switch the valve between the modes of operation.
- FIG. 1 depicts the components which make up the preferred embodiment in exploded view form.
- FIG. 2 is a partial longitudinal section view of a portion of the preferred embodiment. In the view of FIG. 2 , the valve is depicted in an aspiration/backflow/purge/sample mode of operation.
- FIG. 3 is a partial longitudinal section view of a portion of the preferred embodiment; however, FIG. 3 depicts the apparatus in a pressure-activated flow mode of operation.
- FIG. 4 is a perspective view of a ring component of FIG. 1 .
- FIG. 5 is a pictorial representation of a manifold formed with a number of the valves “ganged” together.
- a valve 701 is made up of three major components: a core 703 , a ring 705 , and a body 707 .
- the core 703 includes a manually-operable portion 709 with outwardly extending “wings” 711 and 713 which are adapted to be gripped by thumb and forefinger of an operator.
- the core may be rotated between two positions, each position corresponding to an operating mode.
- the “wings” 711 and 713 are aligned as shown in FIG. 2
- the valve is in an aspiration/backflow/purge/sample mode of operation.
- the “wings” 711 and 713 are positioned orthogonal to the position of FIG.
- the valve is in a pressure-activated flow mode of operation.
- the core 703 further includes a contoured lower portion 716 which is adapted to extend through the central bore of ring 705 and to secure the ring from rotating relatively to the core, with components maintained within the cavity of body 707 .
- Body 707 includes an inlet 715 which is adapted for the receipt of anesthesia drugs or other fluids which are to be administered to a patient, and an outlet 717 which allows flow through the manifold and toward the patient. In the aspiration/backflow/purge/sample mode of operation, fluids may be pulled from the manifold in reverse direction, flowing from outlet 717 toward inlet 715 .
- inlet 715 is shown as including an external female connector 719 and a central cavity 721 .
- Outlet 717 includes a central cavity 730 .
- flow arrows 723 , 725 , 727 , and 729 depict a possible flow inward through valve 701 .
- fluid may also flow in the reverse direction from outlet 717 to inlet 715 .
- Core 703 is shown as including a central cavity 731 which aligns with inlet 715 and outlet 717 when the “wings” 711 and 713 of core 703 are aligned with inlet and outlet ports 715 and 717 .
- FIG. 2 also depicts the manner by which core 703 is secured in position relative to body 707 . More specifically, a circular notch 737 is provided on the exterior surface of core 703 at its distal end. A corresponding shoulder 739 is formed in the central cavity of body 707 and adapted in size and location in order to mate with circular notch 737 .
- FIG. 3 depicts valve 701 in a pressure-activated flow mode of operation.
- ring 705 operates to permit the flow of fluid in one direction only and to check the flow of fluid in the opposite direction.
- flow arrows 751 , 753 , 755 , 757 , 759 , 761 , and 763 depict the flow of fluid through valve 701 in this particular mode of operation.
- ring 705 includes flaps, 771 and 773 , which extend downward into the flowpath when the core 703 is rotated to change the mode of operation. Flaps 771 and 773 are adapted to move easily in response to one flow direction, but to oppose flow in the opposite direction.
- flap 773 is adapted to be in close physical proximity to flow channel 721 of inlet 715 . Fluid flowing inward through inlet 715 will push flap 773 radially inward and will flow under and around flap 773 . In the event of backflow, flap 773 will be pushed into sealing engagement with cavity 721 , thus checking backflow.
- flap 771 is in close physical proximity to cavity 731 of core 703 . Flap 771 will move radially outward in response to flow moving from inlet 715 to outlet 717 . Fluid will urge flap 771 radially outward and will flow around flap 771 . However, flap 771 will check the reverse flow by sealing engagement of flap 771 to cavity 731 of core 703 .
- flaps 773 and 771 there is an asymmetry between flaps 773 and 771 . This asymmetry facilitates the operation of the valve during the pressure activated flow mode.
- flap 771 is likely excluded and flap 773 is utilized solely to preferentially direct the flow of fluid inward in response to the pressure from fluid at inlet 715 and to check the flow of fluid backward through valve 701 .
- FIG. 4 depicts ring 705 in a perspective view.
- a shoulder 781 is provided at the upper end of ring 705 to engage body 707 .
- Cavities 783 and 785 are provided to allow fluid to pass through ring 705 during the aspiration/backflow/purge/sample mode of operation.
- Cavities 787 and 789 are provided at the lower portion of ring 705 in order to define flaps 771 and 773 .
- FIG. 5 is a pictorial representation of an anesthesia manifold formed through the “ganging” together of valves 714 , 716 and 718 .
- a manifold 710 including a central flow member 712 , is mechanically coupled to the outlet ports of valves 714 , 716 and 718 .
- Inlet ports 720 , 722 and 724 are adapted to mate with syringes or medication pumps in order to supply medication and/or fluids to the manifold 710 .
- valves 714 , 716 and 718 are shown as being aligned with the inlet ports 720 , 722 and 724 , respectively, so that valves 714 , 716 and 718 are in the aspiration/backflow/purge/sample mode of operation.
- FIG. 6 is a pictorial representation of an anti-rotational interlock feature 801 of the present invention.
- the core 703 is disposed within a central cavity defined within ring 705 .
- Ring 705 is disposed within a central cavity of body 707 .
- Ribs 790 and 792 are formed on the exterior surface of core 703 . They extend along at least a substantial portion of the outer surface of core 703 .
- Corresponding slots 794 and 796 are defined within the central bore of ring 705 . Ribs 790 and 792 are adapted in size and shape in order to fit within slots 794 and 796 .
- rib and slot may be utilized to lock the core 703 to ring 705 forcing them to move together as the core is rotated relative to body 707 .
- a plurality of ribs and slots may be provided between core 703 and ring 705 .
- the ribs may be provided on ring 705 and the slots may be provided on core 703 . This anti-rotational interlock feature 801 ensures that the core 703 and ring 705 are always properly aligned.
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/634,513 US7326188B1 (en) | 2002-08-02 | 2003-08-04 | Anesthesia manifold and induction valve |
Applications Claiming Priority (3)
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US40101902P | 2002-08-02 | 2002-08-02 | |
US41742202P | 2002-10-09 | 2002-10-09 | |
US10/634,513 US7326188B1 (en) | 2002-08-02 | 2003-08-04 | Anesthesia manifold and induction valve |
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US7326188B1 true US7326188B1 (en) | 2008-02-05 |
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US10/634,513 Expired - Lifetime US7326188B1 (en) | 2002-08-02 | 2003-08-04 | Anesthesia manifold and induction valve |
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Cited By (53)
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US20080262465A1 (en) * | 2005-10-30 | 2008-10-23 | Medimop Medical Projects Ltd. | Needleless additive control valve |
US20130053812A1 (en) * | 2010-03-15 | 2013-02-28 | Fresenius Kabi Deutschland Gmbh | Clamp and clamping system and use thereof |
US8684994B2 (en) | 2010-02-24 | 2014-04-01 | Medimop Medical Projects Ltd. | Fluid transfer assembly with venting arrangement |
US8753325B2 (en) | 2010-02-24 | 2014-06-17 | Medimop Medical Projects, Ltd. | Liquid drug transfer device with vented vial adapter |
US8752598B2 (en) | 2011-04-17 | 2014-06-17 | Medimop Medical Projects Ltd. | Liquid drug transfer assembly |
US8852145B2 (en) | 2010-11-14 | 2014-10-07 | Medimop Medical Projects, Ltd. | Inline liquid drug medical device having rotary flow control member |
US8905994B1 (en) | 2011-10-11 | 2014-12-09 | Medimop Medical Projects, Ltd. | Valve assembly for use with liquid container and drug vial |
USD720451S1 (en) | 2012-02-13 | 2014-12-30 | Medimop Medical Projects Ltd. | Liquid drug transfer assembly |
US8979792B2 (en) | 2009-11-12 | 2015-03-17 | Medimop Medical Projects Ltd. | Inline liquid drug medical devices with linear displaceable sliding flow control member |
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